In a way that is too extraordinary to be described

In a manner that is impossible to express due to its sadness

इतना असाधारण कि वर्णन नहीं किया जा सकता

English Usage: The sunset was indescribably beautiful.

Hindi Usage: सूर्यास्त इतना असाधारण था कि उसे वर्णन नहीं किया जा सकता।

So complicated that it cannot be easily described

इतनी जटिल कि इसे आसानी से वर्णित नहीं किया जा सकता

English Usage: The math problem was indescribably complex.

Hindi Usage: गणित की समस्या इतनी जटिल थी कि उसे आसानी से वर्णित नहीं किया जा सकता।